@article{118171,
      author = {O'Gorman, James Vivian, and Walker, Philip Leroy,},
      url = {http://library.usi.edu/record/118171},
      title = {Mineral matter and trace elements in U. S. coals : a  report submitted to the Office of coal Research, United  States Department of the Interior /},
      publisher = {Office of Coal Research, U. S. Department of the  Interior,},
      recid = {118171},
      pages = {183 . :},
      address = {Washington, D. C. :},
      year = {1972},
}